Improvement in pendulum adjustments for clocks



G. B. OWEN.

Pendulum Adjustment for Clocks.

Patehted Feb. 4, 1879.

vmmsgzs 6/&f6 MM I MPETERS, PHOTO-LITHOGRAPHER, WASHINGTON n c.

INVBNTUR I ATTORNEYS.

UNITED STATES PATENT OFFICE.

GEORGE E. OWEN, OF WINSTED, CONNECTICUT.

Specification forming part of Letters Patent No. 212,045, dated February 4, 1879;

application filed December 13, 1878.

To all whom it may concern:

Be it known that I, Gnonon B. Owner, of iVinsted, in the county of Litehfield and State of Connecticut, have invented a new and Improved Clock-Movement, of which the following is a specification This i n ven tion relates specifically to improvements in the construction of the pallet-arm and the rod connecting it with the pendulum, the object whereof is to so connect the said parts that the pendulum will adjust itself readily to the position of the clock withoutiuterferin g with the regularity of the pulsations.

It consists in pivoting the connecting-rod to an arm fixed to the pallet, and extending down sutliciently far to give ample leverage to the pendulum, whereby the regularity of the beats will be maintained when the clock is out of plumb. Further, it consists of the manner of connecting the pendulum connecting-rod to the pallet-arm.

In the accom 'ianying drawing, Figure 1 is a side elevation of aclock-movement provided with my lll'lPlOVGlllClltS; and Fig. 2 is a section of the same on line no Similar letters of reference indicate corresponding parts.

Referring to the drawing, A represents the frame of the clook-mm'ement. 13 is the escapement; and C is the pallet.

E represents an arm. The upper end is lived to the pallet just back of its pivot, and

the arm is bent so as to form a rightangular connection with the pallet, and is then carried down, its end being bent into a slot, a, made in the under edge of the lower crossbar of the frame.

Justbelow the bend Z) in arm E a tongue, 0, is struck out of the arm, (the upper end remaining in connection. with it,) so as to form aspring. At thefree end ofthis spring-tongue the arm is enlarged into a boss, (I.

F is the rod connecting the pendulum-rod c with the pallet-arm. Its upper end is laid against the outside of the boss (I, and is so cured in that position by a pivot, f, passed through it and through the free end of the tongue, as clearly shown in Fig. 2. The spring in the tongue holds the end of the rod against the arm, and thus keeps it at the proper tension, and as it wears it can be adjusted to compensate therefor.

The operation of the invention is as follows: However much out or plumb the clock may be, the pallet will not be affected, as its arm, not being rigidly connected with it, will be free to vibrate in the same are at all times, the connecting-rod adjusting itself to the varying distance of the pendulum-rod from the arm by slipping up or down on the said rod. \Vhen the clock is perfectly plumb the connectingrod F is at an acute angle to the arm E; but it the top of the clock is turned over, say, to the right, the connecting-rod approaches near to a parallel with the arm, and the farther it is turned the nearer it gets to it. At the same time the arm E is not affected by the changed position of the pendulum, whereby, when in operation, it exerts the same force on the pendulum, and thus maintains the regularity of the beats.

Vhen the clock is turned in the opposite direction out of plumb, the pendulum and connecting-rod assume the position indicated by the dotted lines; but the pallet-arm vibrates in precisely the same are, and thus the regularity of the beats is not interrupted.

The verge of clock-movements, I am aware, has been heretofore pivoted to the pallet directly; but the manner of doing this is objectionable on account of the diiiiculty of making the pivoted joint, the consequent expense, and the insufficient leverage. Now, the arm referred to in my description is stamped out complete, is attached to the pallet by an ordinary rivet, and its connection with the connecting -rod is quickly and easily made, and, besides, the spring-tongue enables the proper tension to be maintained. In addi tion the leverage is such that it vibrates the pendulum with perfect ease.

Having thus fully described my invention, I claim as new and desire to secure by Let ters Patent- 1. As an improvement in cloclemovements, the pallet-arm E, in combination with the con necting-rod F, pivoted thereto, and pendulunn rod 0, for adjusting the center of vibration and securing the regularity of the beats when the clock is out of plumb, substantially as de scribed.

2. The spring-tongue c in arm E, to which the rod F is pivoted, in combination with the rod F, substantially as described.

GEORGE E. OTVEN. lVitnesses O. Snnewrcn, WILsON 0. Down 

